Question

The radii of two cylinders are in ratio 3:4 and their height is 10cm each. Find ratio of their curved surface area.

Answer 1

Answer:

Step-by-step explanation:

This is the answer

Answer 2

Ratio of their curved surface area is 3:4

Step-by-step explanation:

The radii of two cylinders are in ratio 3:4

Let the ratio be x

So, radii are 3x and 4x

Height of cylinders are 10 cm

Curved surface area of cylinder 1 = $2 \pi r h=2 \times \pi \times 3x \times 10$

Curved surface area of cylinder 2=$2 \pi r h = 2 \pi \times 4x \times 10$

Ratio of curved surface area = $\frac{2 \times \pi \times 3x \times 10}{2 \pi \times 4x \times 10}= 3:4$

Hence  ratio of their curved surface area is 3:4

#Learn more:

If the ratio of radii of two cylinders of equal height is 1:3,find the ratio of their curved surface area

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